Sustainment of high confinement in JT-60U reversed shear plasmas

被引：30

作者：

Fujita, T ^{[1
]}

Kamada, Y ^{[1
]}

Ide, S ^{[1
]}

Takeji, S ^{[1
]}

Sakamoto, Y ^{[1
]}

Isayama, A ^{[1
]}

Suzuki, T ^{[1
]}

Oikawa, T ^{[1
]}

Fukuda, T ^{[1
]}

机构：

[1] Naka Fus Res Estab, Japan Atom Energy Res Inst, Ibaraki, Japan

来源：

NUCLEAR FUSION | 2002年 / 42卷 / 02期

关键词：

D O I：

10.1088/0029-5515/42/2/309

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

Experimental results towards long sustainment of JT-60U reversed shear (RS) plasmas, where high confinement is achieved owing to strong internal transport barriers, are reported. In a high current plasma with an L mode edge, a deuterium-tritium-equivalent fusion power gain Q(DT)(eq) = 0.5 was sustained for 0.8 s (approximate tothe energy confinement time) by precise adjustment of the plasma beta using feedback control of stored energy. In a high triangularity plasma with an ELMy H mode edge, a high bootstrap current fraction (approximate to80%) was obtained in a high q regime (q(95) approximate to 9), which led to the full non-inductive current drive condition. A normalized beta beta(N) approximate to 2 and an H factor H-89 approximate to 3.5 (HH98y2 approximate to 2.2) were sustained for 2.7 s (about 6 times the energy confinement time). The values of beta(N) and H-89 sustained in RS plasmas were improved remark-ably by operating with high bootstrap current fraction and high triangularity.

引用

页码：180 / 186

页数：7

共 15 条

[1] DETERMINATION OF THE NONINDUCTIVE CURRENT PROFILE IN TOKAMAK PLASMAS [J].

FOREST, CB ;

KUPFER, K ;

LUCE, TC ;

POLITZER, PA ;

LAO, LL ;

WADE, MR ;

WHYTE, DG ;

WROBLEWSKI, D .

PHYSICAL REVIEW LETTERS, 1994, 73 (18) :2444-2447

[2] High performance experiments in JT-60U reversed shear discharges [J].

Fujita, T ;

Kamada, Y ;

Ishida, S ;

Neyatani, Y ;

Oikawa, T ;

Ide, S ;

Takeji, S ;

Koide, Y ;

Isayama, A ;

Fukuda, T ;

Hatae, T ;

Ishii, Y ;

Ozeki, T ;

Shirai, H .

NUCLEAR FUSION, 1999, 39 (11Y) :1627-1636

[3] Internal transport barrier for electrons in JT-60U reversed shear discharges [J].

Fujita, T ;

Ide, S ;

Shirai, H ;

Kikuchi, M ;

Naito, O ;

Koide, Y ;

Takeji, S ;

Kubo, H ;

Ishida, S .

PHYSICAL REVIEW LETTERS, 1997, 78 (12) :2377-2380

[4] Achievement of high fusion performance in JT-60U reversed shear discharges [J].

Ishida, S ;

Fujita, T ;

Akasaka, H ;

Akino, N ;

Annou, K ;

Aoyagi, T ;

Arai, T ;

Arakawa, K ;

Asakura, N ;

Azumi, M ;

Budny, R ;

Chiba, S ;

DaCosta, O ;

Ebisawa, N ;

Fujii, T ;

Fukuda, T ;

Funahashi, A ;

Grisham, L ;

Gunji, S ;

Hamamatsu, K ;

Hasegawa, Y ;

Hatae, T ;

Higashijima, S ;

Hiratsuka, H ;

Hirauchi, S ;

Hirayama, T ;

Honda, A ;

Honda, M ;

Hosogane, N ;

Ichige, H ;

Ide, S ;

Ikeda, Y ;

Isaka, M ;

Isayama, A ;

Isei, N ;

Ishii, Y ;

Isozaki, N ;

Itami, K ;

Itoh, T ;

Iwahashi, T ;

Kamada, Y ;

Kaminaga, A ;

Kashiwabara, T ;

Kawai, M ;

Kawamata, Y ;

Kawano, Y ;

Kazama, D ;

Kazawa, M ;

Kikuchi, M ;

Kimura, H .

PHYSICAL REVIEW LETTERS, 1997, 79 (20) :3917-3921

[5] Achievement of high fusion performance in JT-60U reversed shear discharges (vol 79, pg 3917, 1997) [J].

Ishida, S ;

Fujita, T ;

Akasaka, H ;

Akino, N ;

Annou, K ;

Aoyagi, T ;

Arai, T ;

Arakawa, K ;

Asakura, N ;

Azumi, M ;

Budny, R ;

Chiba, S ;

Da Costa, O ;

Ebisawa, N ;

Fujii, T ;

Fukuda, T ;

Funahashi, A ;

Grisham, L ;

Gunji, S ;

Hamamatsu, K ;

Hasegawa, Y ;

Hatae, T ;

Higashijima, S ;

Hiratsuka, H ;

Hirauchi, S ;

Hirayama, T ;

Honda, A ;

Honda, M ;

Hosogane, N ;

Ichige, H ;

Ide, S ;

Ikeda, Y ;

Isaka, M ;

Isayama, A ;

Isei, N ;

Ishii, Y ;

Isozaki, N ;

Itami, K ;

Itoh, T ;

Iwahashi, T ;

Kamada, Y ;

Kaminaga, A ;

Kashiwabara, T ;

Kawai, M ;

Kawamata, Y ;

Kawano, Y ;

Kazama, D ;

Kazawa, M ;

Kikuchi, M ;

Kimura, H .

PHYSICAL REVIEW LETTERS, 1998, 80 (16) :3670-3670

[6] Long sustainment of JT-60U plasmas with high integrated performance [J].

Kamada, Y ;

Isayama, A ;

Oikawa, T ;

Sakamoto, Y ;

Hosogane, N ;

Takenaga, H ;

Kusama, Y ;

Fujita, T ;

Takeji, S ;

Ozeki, T ;

Ishii, Y ;

Tokuda, S ;

Ushigusa, K ;

Naito, O ;

Ishida, S ;

Koide, Y ;

Fukuda, T ;

Takizuka, T ;

Shirai, H ;

Hatae, T .

NUCLEAR FUSION, 1999, 39 (11Y) :1845-1853

[7]

KAMADA Y, 1997, FUSION ENERGY 1996, V1, P247

[8] STEADY-STATE TOKAMAK REACTOR BASED ON THE BOOTSTRAP CURRENT [J].

KIKUCHI, M .

NUCLEAR FUSION, 1990, 30 (02) :265-276

[9] Stationary magnetic shear reversal experiments in Tore Supra [J].

Litaudon, X ;

Arslanbekov, R ;

Hoang, GT ;

Joffrin, E ;

KazarianVibert, F ;

Moreau, D ;

Peysson, Y ;

Bibet, P ;

Froissard, P ;

Goniche, M ;

Rey, G ;

Ferron, J ;

Kupfer, K .

PLASMA PHYSICS AND CONTROLLED FUSION, 1996, 38 (09) :1603-1626

[10] Characteristics of internal transport barriers in JT-60U reversed shear plasmas [J].

Sakamoto, Y ;

Kamada, Y ;

Ide, S ;

Fujita, T ;

Shirai, H ;

Takizuka, T ;

Koide, Y ;

Fukuda, T ;

Oikawa, T ;

Suzuki, T ;

Shinohara, K ;

Yoshino, R .

NUCLEAR FUSION, 2001, 41 (07) :865-872

← 1 2 →